微波磁控管功率合成中基于LabWindows/CVI实现移相控制

Phase shifting control based on LabWindows/CVI for microwave magnetrons power combining

为实现基于注入锁频磁控管的微波功率合成,提出一种使用虚拟仪器软件控制注入锁频磁控管相位的方法.基于LabWindows/CVI 软件开发的功率合成自动化操作与控制模块,实现注入锁频磁控管的微波功率合成系统的数据采集、分析处理、反馈控制等功能.系统最小移相步进为5.6°,移相范围为-180°-180°,系统处理速度达到ms 量级.实验表明,控制系统工作准确可靠,满足微波磁控管功率合成控制的需求.

A novel method for the phase-shift control of an injection-locked magnetron with VirtualInstrument Software is presented to enhance the microwave power combining from injection-lockedmagnetrons. An automatic power combining operation and control module based on a LabWindows/CVIprogram is presented as well. A few functions, such as data collection, analysis, and feedback control, arerealized with the module. The minimum phase shift step and the phase shift range are 5.6° and from -180°to 180°, respectively. The processing rate of the system reaches the order of milliseconds. It is shown thatthe module works well and the system is reliable according to experiments results.